Find the last 4 digits (ZIP+4) for an address in 21404

ZIP 21404, Annapolis, MD is filled in. Just type the street address.

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ZIP Code 21404 – Annapolis, MD

Annapolis, Maryland · Anne Arundel County · Eastern time

ZIP code21404
CityAnnapolis
StateMaryland
CountyAnne Arundel County
PopulationNot published (no Census ZIP area)
Time zoneEastern · local time
ZIP typePO box or unique ZIP (no Census area)
Center (lat, long)38.9784, -76.4922

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21404 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

21402 Annapolis · 1.3 mi21403 Annapolis · 2.5 mi21401 Annapolis · 3.3 mi21409 Annapolis · 3.8 mi21405 Annapolis · 4.6 mi21012 Arnold · 4.7 mi21037 Edgewater · 4.9 mi21140 Riva · 5.4 mi

About ZIP 21404

ZIP code 21404 is assigned to Annapolis, Maryland. It lies in Anne Arundel County. It is a PO-box-only or single-address ZIP, so the Census Bureau does not publish an area for it; the location shown is approximate. The closest neighboring ZIP is 21402 (Annapolis), about 1.3 miles away.

Every address in 21404 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources